GC-MS is the analysis method of choice for smaller and volatile molecules such as benzenes, alcohols and aromatics, and simple molecules such as steroids, fatty acids, and hormones. It can also be applied towards the study of liquid, gaseous and solid samples.

There are many advantages to using GC-MS for compound analysis, including its ability to separate complex mixtures, to quantify analytes, and to determine trace levels of organic contamination.

The Agilent 6890 is a leading GC system with state of the art dynamic temperature programming, EPC pneumatics and flow controls. The 6890 comes equipped with a split-splitless injection system that supports a wide variety of sample introduction techniques including thermal desorption, on-column injection, solid-phase micro-extraction (SPME), direct headspace injection, and solvent-based injections. Standard equipment includes a flame ionization detector (FID) ideal for running serial paraffins for retention index determinations. Read more

The LCQ is an ion-trap based instrument normally fitted with an electrospray (ESI) ionization source (APCI is also available if required). It can operate in both positive and negative ion modes and is primarily used to analyse bio-molecules in solution such as proteins, peptides, biopolymers and oligonucleotides. The instrument is particularly useful for structural characterization of such species due to its ability to perform multiple stage (MSn) ion fragmentation analyses (up to 10 stages), allowing ion-mapping experiments to be conducted. It is also useful for analysis of high mass species that form multiply charged ions with ESI (such as proteins, peptides) due to the post-acquisition de-convolution capability of the operating software. It can be operated on a stand-alone basis with solution samples introduced by direct infusion using a syringe pump, or integrated with a Finnigan Surveyor LC system for LCMS applications.

The AA-300 is used to determine the unknown concentration of an individual element by measuring the amount of light the unknown concentration absorbs. Instrument readouts are calibrated to display concentration directly. The basic instrumentation requires a primary light source, an atom source and a detector. The light source is a hollow cathode lamp (HCL) or electrode discharge lamp (EDL), which emits a spectrum specific to the element from which it is made. The light beam passes through either an air-acetylene or nitrous oxide-acetylene flame, which has a high temperature and specific flow rate. The atom source introduces the sample into the flame as an aerosol and the heat produces free analyte atoms. Analyte atoms in the flame that correspond to the lamp being used absorb energy from the light source. A detector, usually a photomultiplier tube, measures the light intensity exiting the flame. The electronics convert the amount of light absorbed to the actual sample concentration.

The AA-300 is equipped with an automatic six-lamp turret and is programmed to perform sequential multielement analysis. The AA-300 is equipped with lamps for the following elements: Ag, Al, As, Ba, Ca, Cd, Cr, Cu, Fe, K, Na, Mg, Ni, Pb and Zn The Iron(Fe) and Copper(Cu) lamps are the most commonly used.

Mechanically loaded as well all LX200 models feature a primary mirror locking mechanism, which effectively prevents movement of the primary mirror during long exposure astrophotography or observing. Turn the lock knob located just above the telescopes main focus knob and the progressive-tension primary lock completely cancels any residual image shift due to mirror movement during visual, photographic, or imaging applications.

The Lunt LS60THa is a complete h-alpha solar telescope. The refractor-based system has a precision-aligned singlet chromatic lens with a 60 mm aperture. The front singlet lens reduces half the stray light of an achromat, fully eliminating the possibility of on-axis coma, astigmatism, de-centering aberrations, and provides, with the matched collimation lens set, a full spherical corrected flat-field solar telescope. The focal length is 500 mm, providing a ~4.5 mm image through a 6 mm blocking filter. Fine adjustment is achieved with a 2″ Crayford-style focuser or Feather Touch focuser with 10:1 reduction. An internal etalon with tilt-tune adjustment allows for a